Multiple-pipe mold



Feb. 3. 1925 1,525,000

T. SCHUSTER MULTI PLE P I PE MOLD Filed Feb. 18, 1924| 5 Sheets-Sheet 1Feb. 3. 1925.

T sCHUsTER MULT I PLE PI PE MOLD 5 Sheet-Sheet 2 Filed Feb; 18, 1924 31SQ SZ'kuSkr Feb. 3. 1925. 1,525,000

T. SCHUSTER MULTIPLE PIPE MOLD Filed Feb. 18, 1924 5 Sheets-Sheet 5 QWW' III-51.121-

fiamma 5620245? Feb 3. 1925 T. SCHUSTER MULT I PLE PI PE MOLD Filed Feb.18, 1924 Sheets-Sheet 4 Feb. 3. l 925.

T. SCHUSTER MULTIPLE PIPE MOLD 5 Sheets-Sheet 5 Filed Feb. 18, 1924Patented Feb. 3, 1925.

' THOMASASGI'LUS'DEB, F TPHQENIZX, .ARIZONA.

To allwl om it may concern vBe it known thatfl, T -io iAs Soiius'rn i, acitizen of the United States, residing at Phoenix, in the county I ofjlvlaiicopa and State of Arizona have invented certain new and usefulImprovements inl lultiple ipe Molds and Ido declare the following to bea.full, clear, and exact description of the inventiomsuohas will enableothers skilled in the art to Wliicliit appertainsto make and use thesame.

My invention relates to in provements in cement IDOlClS ZtIlCl thepresent disclosure is directed primarily to a mold adapted .for thesimiltaiieous casting of aplurality of ceineiit pipes or tiles.

Qne object of the invention is to ,provide a inultiple nold. which may,be easily and rapidly operated to simultaneously produce a plurality ofpipe sections or therlikeflof uniform sizeand quality.

In the-preferred form of construction, each mold is provided with anQXpttHSiblE; and contractible core and-a further object is to provide anovel construction and. association of parts for moving a core expanderinto and outof the lower end of the core, contraction of said core forremoval being permitted when said expander is disengaged there from,while insertion of said expandei; places the core in condition for use.

In the construction disclosed,.a plurality of the core expanders arecarried by aiho'riontal vertically movable bar and another object of theinvention is to provide unique means for raising andlowering this bar ora similar bar which might possibly be used for other purposesonianalogous molds.

Yet another object is to provide unique means for holdingthc mold'sinspaced relation for use, said means however being removable to permitthe moldsto be removed from the completed pipes or the like.

;A still further'aiin is to provide unique sectional bell-forms for thepipe sections, the sections of said forms being connected with eachother'in a novel manner.

Yet another object is to provide an improved form of conti'actible coreprovided at its upper end with novel meansfor limiting its expansionwhen an expander isiinted into such end.

' Further objects are to provide novel means for filling the molds andto produce unique centering means for their cores.

"With the forcgoi g and ininoi-objects in view, the invention resides.in the novel subect matter hereinafter described and claimed, the 1description being supplemented by the accompanying drawings."

Figure 1 isfa longitudinal sectional view partly in elevationdshowingainultiple mold constructed in accordance with my invent1on.

F gure. 1 is a plan viewof the mold filling trough. and core centeringmeans carried thereby.

igure 2 is a fragmentary View similar to Figul, but illustrating thecore e ipanders moved toa lowered inoperative position.

Figure 3 is a horizontalsectional view on line. 33 of Fig. 2.

ItiguieS is an enlarged sectional view of the mold fastener shown moreparticularly in Fig. 3. I I

Figure 4. is a vertical transverse sectional view as indicatedby linesli of Fig; 1.

Figure 5 is a perspective view of portions of the mold shown in thepreceding-figures.

E1g L116 6 is a perspective view or a numloer 01' the coreeXpa-nders andtheir carry- 111g and operating means.

Figui e 1 is a peispective viewof the core shown in certain of thepreceding figures. said corev be ng in its contracted position.

F igure 8 s afragmentary view siinilarto Fig. I, but illustratingthemanner in which the core ISQYPdIldGCl at its upper end.

F gure. 9 1s a perspect ve vicw showing a noldwhich. maybe used in placeof those illustrated in the preceding figures.

Figure 9 1s a fragmentary perspective view of theopposite side ofthemold shown llli'Elgr 9.

"F1g-Ul:6 l() is a. perspective view illustrat- 111g adiiiereiit form ofcore.

1 Figure 11 is a fragmentary plan view Sl1O \Vl11g a fO111l of moldpositioning means 'lllCli differs fromthe corresponding means shown inviews above described. V

Figui'e 12 is a perspective view showing a still further; form of moldpositioning means.

-F1gure is aperspect ve view llustrating yet another var ation of themold pos tioii. ing means. V

{Figure 1s is a fragmentary view similar to F g.- 1 illustrating moldsof a different com struction. i

Figure '15 is a transverse sectional view on line 1515 of-Fig. 14:.

=Figure16 is a horizontal sectional view on line .6-4.6 of F g- 1 iFigure 17 is a disassembled perspective view of portions of the moldsshown in Figs. 14, 15 and 16.

In the drawings above briefly described, the numerals l designate aplurality of parallel transverse sills from whose ends, posts 2 riserigidly, the upper ends of said posts being connected by horizontal bars3 wh1le similar bars 4 connect said posts at lower points. A pluralityof parallel longitudinal stringers 5 are secured upon the sills 1 inspaced relation, to support a plurality of rows of pipe molds 6. Eachrow of these molds may well be formed of two units as shown in Fig. 5,said units being of stamped metal in most instances with slots 7,through which appropriate releasable fasteners S are passed to securethem together. Each fastener 8 is preferably of the constructiondetailed in Fig. 3, in which a bolt is shown formed of two telescopicsections 8" and 8" one of which is squared or otherwise shaped to passthrough a correspondingly shaped opening in the other section. The twobolt sections are secured together by threading a nut 8 on the innersection, and the outer ends of each section is formed with a flat head8. The bolts pass rotatably through openings 7 in one unit or section ofthe molds and are insertible through slots 7 in the other section orunit, and by turning the bolts by grasping either head 8, they may bedisposed for connecting or disconnecting the two mold sections or units.The edges of the slots 7 are preferably reinforced as The lower ends ofthe molds 6 are shown provided with bell forms 9 to co-operate withsuitably shaped bottom plates 10 in forming bells at the lowerends ofthe pipes being cast. The bottom plates 10 are formed with centralopenings 11 into which the lower ends of tubular, eXpansible cores 12,are insertible. For the purpose of expanding these tubular cores 12,suitable core expanders 18 are used, for reception in their lower ends.lVhile the cores may be of any desired form, I have shown them in mostviews as formed of sheet metal, bent into the form of a tube withslidable overlapping edges 14 (see Figs. 7 and 8). hen these cores arein place and the expanders 13 are disposed in their lower ends, suchends are expanded to their proper diameter and so held. Additionalexpanders 15 are insertible into the upper ends of the cores 12 toexpand them to the proper extent and each of these expanders, may wellbe of sleeve-like form, with a handle 15. In order to limit theexpansion of the upper ends of the core, I prefer to provide said upperends with rings 16 which surround them, each ring being secured at atleast one point to its respective core. If desired, a chain or the like17 may connect dian'ietrically opposite portions of the core 13 andextend across the interior of such core as shown in Fig. 8, so that whenthe expander 15 is removed, said chain or the like may be pulledinwardly thus contracting the core and withdrawing it from the completedpipe.

For simultaneously filling the molds 6 of} any row, I have proi ided atrough 6 to rest: on rails 6 supported by the posts 2, said troughhaving mold receiving openings 6 in its bottom, whose walls are inwardlyde c-lined as shown. Cement or the like poured in the trough 6 will runreadily into the numerous molds 6 around the cores 12 which are centeredby novel means carried by the trough. In the present showing, this meanscomprises transverse arms 6 hinged at 6' to one side of the trough andhaving pins 6 receivable in openings 6 in the ha11- dles 15.

In Fig. 10, a form of core has been illustrated, comprising two sections18 and 19 each of slightly more than semi-circular form, with their edgeportions in overlapping relation. This form of core may be used with theexpanders above described,

and I have illustrated a ring 20 thereon to limit its expansion.

For the purpose of holding the numerous molds 6 in proper position, Ihave shown upper and lower mold-positioning means. In the form ofconstruction shown in most views, these positioning means comprise.horizontal bars 21 disposed at opposite sides;

of the several rows of molds and having inner edges of segmentalformation to engage the molds. The bars, 21 rest upon the bars 3 and 4above described and in order to hold them in proper engagement with themolds, longitudinal wedge bars 23 are preferably provided between thebars of adjacent rows of molds.

In Fig. 12, a different form of mold-positioning means has been shown,as coinprising a pair of parallel angle bars 24am] cross plates 25extending between them with their adjacent edges of segmental form. asindicated at 26. This construction is intended primarily for use when,instead of using the molds 6 above described, separate one-piece moldssuch as the one indicated at 27 in Fig. 9, are employed. In this lastnamed figure, the mold 27 is provided with a. suitable arrangement ofinterfitting flanges or the like 28 on its edges and a suitable clasp orfastener 29 is provided to hold the mold in contracted position and topermit expansion thereof when it is to be removed from the finishedproduct. To allow expanding and contracting movement of the bell 2. ofmold 27, it is split at 27" Fig. 9 and the split is covered by a thinplate 2T loosely connected with the bell for instance by rivets or thelike 27 passing through slots 2". i

llfi

molds ct any character, such asthe molds 27 or 6. p

The core expanders 13, above described are carried by longitudinal,horizontal bars 32 disposed between the sills 5 and normally flush withthe upper sides of the latter, to assist in supporting the molds. In theconstruction shown, the bars 32 are of channel form with their sideflanges 33 turned downwardly. For supporting these bars, parallel' links34 and hand levers 35 have been shown. said links and levers beingpivoted tothe flanges 33 and having their lower ends pivoted tolongitudinally sliid'able bars 36 which are positioned under the bars32-. In the present showing, the bars 36 are of channel form and mayrest slidably-upon' the sills 1, the links and levers being-pivoted, tothe upstanding side flanges of saidbars. These flanges are formedwithlongitudinal slots 37, and transverse straps 38 secured: to thesills 1, pass across the bars and through said slots to properly guidethe latter and retain them in, place. The *bars 32, are guided in theirvertical movement, by ver tical belts or the like 39 whoselower ends mayslidably rest upon the bars36., Be-

tween their ends, the leviers '35 are tulc rum ed.

at 40 to the ends of the bars32 iand it will'be seen that bygrasping'these levers and operating them, the ba'rs'3G'maybeslirhlongitudinally, thus causing the linksi3t ro aise or lower the bars32 as occasionmay'require. Thus, the core expander-s 12-may be-raisedtooperative positions, or lowered to permit contraction and removaliof thecores. Also, attention may be directedltothe fact-that in someinstances, the vertically movable bars 32 might perform functions otherthan carriers for the expanders 13. For instance; in casting any objectswhich do not'require the use of cores, these cores may be removed "fromthe bars 32 and the latter would then -o-operate with the stringers 5'in supporting the molds and might possibly carry shaping devices or thelike, for the objects being-cast.

In Figs. 14c to 17; I have showna different mold construction, in whichthe'body portions of the molds 42 are truly cylindrical and arelongitudinally split, said body. portions being provided withappropriateclasps or fasteners 43 for normally holding.- them in properposition, but for permitting ex.- pansion' thereof for removal; "Ilielower ends of these molds co-operate' with-sectional bell forms 44 whichare pi'efer'ably of cast metal, each form 44 being divided on a. lineextending longitudinally of its row of molds, into two halves 45. Thehalveseatreach side of any row of-molds,v are carried by an angle ironbar a6 and a fiat bar 4-? which are secured to sui tablebosses 48. with.which said halves are provided. The *inner 'en'dso l these halves-areformed with fi'ztllgGS 9' parallel with the dividing line of the tori-us44-: and in abuttingrelation. with each other when the halves areassembled for use. To hold these halves'in assembled relation, I haveshown hookson the bar elfi of one row of't'he halves 45 to engage theflanges 49' on the other- TOW'Of suclr halves. At their upper portions,the forms la-are preferably flared to tightly receive the low'ei-"endsof the molds 42.

Front the "foregoing, taken in connection with the accompanyingdrawings, the constructionl'and' operation or? the mold will be readilyunderstood and it will be seen that it'vvill be very advantageous forperforming numerous kinds otwork, but primarily for the formation-ofpipe or tile sections, either With. or Without bells.

As excellent results may be obtained firom the details disclosechtheymay be followed if desired, but Withinthe scope of the invention." asclaimed;numerous changes may be made. i

I claim:

1. In a moldhaving' avertically movable member at its lower end; asecond member below the first named. member, 111 eans slid ably.mountingsaid' second member for horizontal: n'iove-n'ient, and meansinterposed? between the two members and controlled by theslidingmovement .of said second memberfor effecting vertical"movement ofthe first named i'nei'nber.

'2: Ina mold having a: vertically movable member' at its lower end"adapted to be lowered to remove the product; a. h'orizontah ly. movableslide under said-L vertically movablemember, and: parallel linkageconnecting saidin'iember and? slide, whereby sliding movement, ofthenlatter. will; vertically move the former.

3. In; a: multiple m'oldi having a horizontally elongated: verticallyinova ble bar at the'lower 'eirds'of; its" molds; second horizontallyelongated bar under said; first named bar,;-1neans: mounting said secondbars-for longitudinal: sliding, and parallel bar. will. effect verticalmovement of the: first named bar.

4. 'rhstructure assp eeified in claim; 21; to

'gether, with a handi lever tulcrumedto sa i d vertically movable memberand: pivoted to said slide for effecting slidingof the-latter and;alsoexertingpressure directly on said nio'varble:member 111 aventmaldirection.

In. a. multiple mold having a. vertically movablebar at thelower ends ofits-molds, and! a? base undersaid 'bar:. a channel bar resting-slidablyon: said; base and having longitudinal slots in its side flanges, strapsLil passing across said bar and through said slots, parallel linkspivoted to said vertically movable bar and to the side flanges of saidchannel bar, and a hand lever fulcrumed to one end of said verticallymovable bar and pivoted to said channel bar.

6. A device of the class described comprising a. pair of horizontallyspaced hori zontal mold supports, a horizontal member normally disposedbetween and flush with the upper sides of said supports, a moldsupported jointly by said supports and member and having an expansiblecore, a core expander rising from said member into said core, and meansfor lowering said member and expander to permit contraction of saidcore.

7. A device of the class described comprising mold supporting means, amold supported thereby and having an expansible core, a verticallymovable member under said core having on its upper side a core expanderreceived in said core, and means for raising and lowering said member.

8. A device of the class described comprising a frame structure having;mold-supporting means and including additional spaced horizontalsupports above said supporting means, vertical molds resting on saidsupporting means, and horizontally disposed segmental mold-positioningmeans engaged with said molds and resting on said space-d horizontalsupports.

9. A device of the class described comprising a frame structure havingmold supporting means and including additional spaced horizontalsupports above said supporting means, vertical molds resting on saidsupporting means and disposed in parallel rows, horizontally disposedsegment bars resting on said spaced supports, and engaging oppositesides of said rows of molds, and wedging means between the segment barsof adjacent rows.

10. A device of the class described comprising a pair of spaced parallelsills spaced parallel pairs of stringers extending between and securedto said sills, posts rising from the ends of said sills, horizontal barsover said sills secured to said posts, parallel rows of vertical moldssupported by said pairs of stringers and having expansible cores,vertically movable horizontal bars between said stringers having coreexpanders receivable in said cores, and segmental mold positioning meansengaging opposite sides of said rows of molds and resting on said firstnamed horizontal bars.

11. A device of the class described comprising mold supporting means, avertical mold resting thereon and rising therefrom, said mold having anexpansible core, a vertically movable core expander insertible upwardlyinto the lower end of said core, and

prising mold supporting means, a vertical mold supported thereby andincluding an expansible tubular core and a bottom plate, having anopening through which the one is insertible, and a core expanderinsertible upwardly into said core.

13. A device of the class described comprising a mold having anexpansible core and an expander in the upper end of said core, a fillingtrough communicating with said mold, and core-centering means carried bysaid trough and engageable with said expander.

1a. A device of the class described comprising a mold having a coreprovided at its upper end with an opening, a filling troughcommunicating with said mold, and a pivoted arm carried by said troughand having a downwardly extending pin receivable in the aforesaidopening to center the core within the mold.

15. A structure as specified in claim .13; said expander having anopening in its upper end, said centering means comprising a pivoted armhaving a downwardly extending pin receivable in said opening.

16. A multiple pipe mold comprising a row' of spaced bell forms, eachdivided longitudinally of the row into two separable halves havingabutting flanges parallel with the line of division of said forms, apair of longitudinal bars secured to said halves respectively forholding them in fixedly spaced relation, and hooks pivoted to the bar ofone row of halves and engageable with. the flanges of the other row ofhalves to hold the forms together.

17. An elongated mold having a bell at one end and having a splitthroughout its length, said bell having another split, and a looselyheld plate extending across the last named split.

18. A device of the class described comprising a tubular expausible andcontractible mold member, means for expanding the same, and a ringsurrounding said mold member to limit its expansion, said ring beingattached to said mold member at at least one point.

19. In combination with a two-part mold having a slot in one part and asmaller opening in the other part; a bolt swiveled in said opening andreceivable in said slot, said bolt consisting of two telescopic sectionsrelatively non-rotatable and having operating heads at their outer ends,one'of which may either pass through or extend across said slot.

In testimony whereof I have hereunto affixed my signature.

THOMAS SCHUSTER,

